Index tab



March 2 1926. 1,575,383

J. W. PEARL INDEX TAB Filed Feb. 16. 1921 Patented Mar. 2, 1926.

UNITED STATES PATENT QFFICE,

JAMES W. PEARL, OF CHICAGO, ILLINOIS.

INDEX TAB.

Application filed February 16, 1921. Serial No. 445,490;

ing thereon, on the edge of sheets, guide "ards, folders, envelopes and similar articles used in filing and finding pages, cards, letters and other documents in books, binders, filing cases and other receptacles.

I attain this object by the combination of materials as illustrated in the accompanying drawing, in which:

Figure 1 is a view of the edge of a portion of a sheet or card; Fig. 2, a view of the side of a portion of the sheet or card; Fig. 3, a view of the side of a piece of thin perforated material used for reinforcing the sheet or card; Fig. 4 a side view showing the reinforcing material partially inserted in the sheet or card; and Fig. 5 is a side View of a portion of the sheet or card with the reinforcing material in place, the edge trimmed and tab completed.

Similar letters refer to similarparts in all the views and the detailed description of the construction as follows In Figures 1, 2, 4:, and 5, the letters A, B, C, indicate boundaries of a portion of a sheet or card.

A recess is formed inwardly from the edge of sheet or card by splitting the paper into equal or nearly equal parts, as shown from E to F in Fig.1, and to the depth shown at D in Fig. 2. V

In Fig. 3, the letter G, indicates a piece of thin, tough, flexible and durable material to be used in reinforcing, stronger than the paper, and preferably perforated metal, to strengthen the index tab without materially increasing its thickness or changing the character of its surface. 7

The perforations are provic ed to increase the flexiblity, and to permit cement to function and reunite the severed parts of paper.

Figure t shows the reinforcing material partially inserted in the recess D, E, P, in the sheet or card.

Figure 5 is a view of a sheet or card with reinforcing material'placed' in the recess; cement applied; recess closed; original thickness nearly restored; original surface for writing or printing unchanged and free of projecting parts to interfere with placing or removing documents and the edge of sheet suitably trimmed to form an index tab completely reinforced.

The edges DE, and D-F, of the recess D, E, F, may be cut or split throu h to the surface of the sheet on either one or both sides of the sheet'and for a part or the whole of their length and the edge of the sheet may be trimmed to form the index tab, either before or after the reinforcing material is applied, as may be convenient or necessary in the process of manufacturing, without materially affecting the merits claimed for this invention.

The size and form of reinforcing material.

and the form, size and arrangement of perforations shown by Fig. 8, may be varied without material departure from the true intent of this invention. I i

Having thus fully described the fabrication and objects of my invention, I claim as new and desire to secure by Letters Patent 1. The combination, in a filing element, of a sheet of paper or cardboard recessed inwardly from the edge along only that por tion of the edge to be used as an index tab, a perforated metal plate, smaller than the recess, inserted therein and completely covered by the original paper material, cement applied to firmly unite the interior surfaces and produce a reinforced section of the sheet at the tab only, without perforations, orifices or exposed metal parts and with the original surfaces of the paper retained and restored for writing or printing an index thereon, substantially as set forth.

'2. The combination, in a filing element, of a sheet of paper or card-board recessed inwardly from the edge along only that portion of the edge to be used as an index substantially as set forth.

Signed at Chicago, in the county of Cook and State of Illinois, September 19th, 1922.

' JAMES W} PEARL. 

